Improvement in concrete for pipes, bricks



loolcourosmous,

COATING 0R PLASTIC cuss-mores FOR MlSSlNG GO:

Zglaiutt dtfiitt.

TH0MAS.l. cannon, or BROOKLYN, in, NEW YORK.

Letters Patent No. 111,808, dated February 14, 1871;

IMPROVEMENT IN CONCRETE FOR PIPES, BRICKS, (he.

The schedule referred to in these Letters Patent and making part of tho lune.

concrete for pipes, bricks, fence-posts, and other like uses; and consists in the construction of the core or main part of such commodities of a compost of ashes, gravel, sa or other similar substances, and soluble silica es such as the silicate of soda, potash, lune, or

magnesia, and then, aiter covering the same with by:

rocar 5111, subject it to such a degree of a as will evaporate all the volatile substances an silicate of the core in a-,.dried condition and also fix the carbon of the coating as a permanent cement.-

In forming my compost of silica, ashes, and the like, for the core of the thing to mia-rTuTaTc'tured, I take,

say, three parts of ashes, two parts of coke-dust, and two parts of sand, and mix them thoroughly together with such'a quantity of the solution of siiicatg gf spda or other soluble silicate as \inrinsreortnefi a mortar adapted for molding. I thenggld the mortar so formed into the thing I desire to manufacture and allow it to harden by drying.

eave the After the article being manufactured has passed through the process mentioned and become sufficiently hard for the purpose, I immerse it in coal-tar asphaltum, petroleum, or other hydrocarbdifiiiid.

Tong'snlil n and often enough to form thereon an outer con-tiug pflhydrpcarbpn substances of the'thickness desii' d. then place it in an oven or retort and apply to it such a. degree of heat as will serve to evaporate all the volatile parts \v'ln'clr'it contains, and while thoroughly drying the silicate, without fusion thereof, permanently fixing the carbon of the coating as cecent. The coating thus formed serves as a protec-- tion against eliflorescence and decomposition by the cure it surrounds.

I claim as my invention- V 1. The coating herein described for concretes, substantially as specified. I

2. The coating herein described for coucretes, substantially as and for the purpose specified.

3. The concrete hereindescribed, composed of soluble silicates, coke-dust, sand, and ashes, compounded in the manner and proportions substantially as specified. 1

In testimony that I claim the above I have here-Z unto subscribed my name in the presence of two witnesses.

' THOMAS J. BARRON. Witnesses:

F. B. CURTIS,

Jno. M. HYNE.

Examiner 

